karma.conf.js

// karma.conf.js
const path = require('path');
 
module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-coverage'),
      require('karma-jasmine-html-reporter'),
      require('@angular-devkit/build-angular/plugins/karma')
    ],
    client:{
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    basePath: './src/app/',
    reporters: ['dots', 'coverage'],
    preprocessors: {
      'src/**/*.ts': ['coverage']
    },
    coverageReporter: {
      reporters: [
        { type: 'lcov' }
      ],
      dir: path.join(__dirname, 'coverage'),
      fixWebpackSourcePaths: true
    },
    customLaunchers: {
      ChromeHeadlessNoSandbox: {
        base: 'ChromeHeadless',
        flags: ['--no-sandbox']
      }
    },
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: true
  });
};